/*
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright (c) 2000 - 2015 Pentaho Corporation, Simba Management Limited and Contributors...  All rights reserved.
 */

package org.pentaho.reporting.engine.classic.core.metadata;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.Matchers.emptyArray;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;

import org.junit.Before;
import org.junit.Test;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.DataRow;
import org.pentaho.reporting.engine.classic.core.ReportDataFactoryException;
import org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.StaticDataFactory;

public class DefaultDataFactoryCoreTest {

  private static final String QUERY = "test_query";
  private static final String CONNECTION_NAME = "test_con_name";
  private static final String[] FIELDS = new String[] { "test_field" };

  private DefaultDataFactoryCore dataFactoryCore = new DefaultDataFactoryCore();
  private DataFactoryMetaData metaData;
  private StaticDataFactory element;
  private DataRow parameter;

  @Before
  public void setUp() throws ReportDataFactoryException {
    metaData = mock( DataFactoryMetaData.class );
    element = mock( StaticDataFactory.class );
    parameter = mock( DataRow.class );

    doReturn( FIELDS ).when( element ).getReferencedFields( QUERY, parameter );
    doReturn( CONNECTION_NAME ).when( element ).getDisplayConnectionName();
  }

  @Test
  public void testGetReferencedFields() {
    String[] result = dataFactoryCore.getReferencedFields( metaData, mock( DataFactory.class ), QUERY, parameter );
    assertThat( result, is( nullValue() ) );

    result = dataFactoryCore.getReferencedFields( metaData, element, QUERY, parameter );
    assertThat( result, is( equalTo( FIELDS ) ) );
  }

  @Test
  public void testGetReferencedResources() {
    ResourceReference[] result = dataFactoryCore.getReferencedResources( metaData, element, null, QUERY, parameter );
    assertThat( result, is( emptyArray() ) );
  }

  @Test
  public void testGetDisplayConnectionName() {
    String result = dataFactoryCore.getDisplayConnectionName( metaData, mock( DataFactory.class ) );
    assertThat( result, is( nullValue() ) );

    result = dataFactoryCore.getDisplayConnectionName( metaData, element );
    assertThat( result, is( equalTo( CONNECTION_NAME ) ) );
  }

  @Test
  public void testGetQueryHash() {
    Object result = dataFactoryCore.getQueryHash( metaData, mock( DataFactory.class ), QUERY, parameter );
    assertThat( result, is( nullValue() ) );

    result = dataFactoryCore.getQueryHash( metaData, element, QUERY, parameter );
    assertThat( result, is( instanceOf( String[].class ) ) );
    assertThat( (String[]) result, is( equalTo( FIELDS ) ) );
  }
}